YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 104.45 | a | 96.00 | 80.53 | 69.06 | 87.51 | h | |||
1934 | 71.30 | a | 75.61 | 88.87 | 92.50 | 98.87 | 97.27 | 108.48 | 105.48 | 99.97 | 90.90 | 78.23 | 67.45 | 89.58 | ||||||||||||
1935 | 65.00 | 71.43 | 74.00 | 83.17 | 88.10 | 104.87 | 105.13 | 103.55 | 101.10 | 86.42 | 71.50 | 66.90 | 85.10 | |||||||||||||
1936 | 66.97 | 69.56 | b | 80.60 | a | 88.57 | 95.61 | 103.37 | 107.17 | b | 104.74 | 98.20 | 87.77 | a | 75.56 | c | 65.20 | a | 86.94 | |||||||
1937 | 52.59 | b | 66.89 | 73.67 | a | 84.38 | a | 93.13 | 101.23 | 106.97 | 107.94 | 102.60 | 92.03 | a | 78.77 | 70.26 | 85.87 | |||||||||
1938 | 69.14 | b | 65.71 | 71.94 | 84.62 | a | 92.29 | 100.11 | b | 105.94 | 104.83 | a | 102.37 | 87.34 | b | 72.66 | a | 68.90 | 85.49 | |||||||
1939 | 64.45 | 62.00 | a | 77.52 | 89.39 | b | 94.97 | 102.10 | a | 106.23 | 106.94 | 94.50 | b | 85.24 | b | 77.30 | 72.87 | 86.13 | ||||||||
1940 | 67.73 | a | 68.17 | 80.23 | 85.17 | a | 97.45 | 105.77 | 107.13 | 107.23 | 97.07 | b | 88.45 | b | 72.97 | 67.42 | 87.07 | |||||||||
1941 | 64.06 | 70.57 | 73.77 | 77.40 | 93.30 | a | 98.45 | a | 106.48 | 101.13 | a | 94.38 | a | 80.47 | a | 75.90 | 68.55 | 83.71 | ||||||||
1942 | 67.13 | 66.93 | 73.67 | a | 80.63 | 92.06 | 100.67 | 109.35 | ----- | z | 100.67 | 88.94 | 79.43 | 71.29 | 84.62 | a | ||||||||||
1943 | 66.68 | 72.64 | 77.77 | 86.73 | 95.42 | 99.38 | n | 107.57 | a | 102.77 | 102.07 | 88.53 | a | 73.90 | 64.90 | 85.36 | a | |||||||||
1944 | 64.35 | 64.41 | 73.00 | 83.24 | a | 92.67 | a | 96.17 | 106.42 | 107.68 | 100.33 | 90.84 | 69.67 | 67.74 | 84.71 | |||||||||||
1945 | 66.77 | 69.61 | 69.94 | 83.87 | 92.74 | 98.63 | 107.23 | 102.16 | 101.80 | 90.03 | 75.70 | 64.52 | 85.25 | |||||||||||||
1946 | 65.97 | 68.00 | 74.81 | 86.27 | 90.19 | 102.13 | 103.19 | 103.19 | 100.00 | 83.55 | 70.37 | 69.39 | 84.75 | |||||||||||||
1947 | 66.61 | 76.36 | 77.94 | 84.23 | 95.48 | 98.40 | 107.00 | 100.68 | 101.33 | 87.84 | 69.60 | 63.39 | 85.74 | |||||||||||||
1948 | 68.63 | a | 66.85 | b | 68.97 | 83.03 | 90.37 | a | 98.10 | 104.55 | 105.09 | i | 100.20 | 86.29 | 70.48 | a | 60.97 | 81.68 | a | |||||||
1949 | 50.03 | 62.50 | 72.10 | 86.21 | a | 89.10 | 100.27 | 105.00 | 103.48 | 101.83 | 84.29 | 82.13 | 64.06 | 83.42 | ||||||||||||
1950 | 61.32 | 72.14 | 76.71 | 87.13 | 89.55 | 98.63 | 102.45 | 104.84 | 96.10 | 92.71 | 79.80 | 73.71 | 86.26 | |||||||||||||
1951 | 66.00 | j | 68.60 | h | 73.90 | 80.90 | 90.54 | g | 97.73 | 105.39 | 102.26 | 101.53 | 87.00 | 71.42 | f | 61.17 | b | 88.74 | d | |||||||
1952 | 59.68 | 67.45 | 67.52 | 81.00 | 95.23 | 96.30 | 105.13 | 105.48 | 100.67 | 96.06 | 70.73 | 63.06 | 84.03 | |||||||||||||
1953 | 70.29 | 68.93 | 75.71 | 80.63 | 82.65 | 97.87 | 106.42 | 103.52 | 101.47 | 86.77 | 75.80 | 67.57 | h | 86.37 | a | |||||||||||
1954 | 63.00 | 76.25 | 71.00 | 87.87 | 92.48 | 97.57 | 104.65 | 101.29 | 99.80 | 89.45 | 78.30 | 64.94 | 85.55 | |||||||||||||
1955 | 57.87 | 64.07 | 73.55 | 78.97 | 86.97 | 98.33 | 100.68 | 100.03 | 99.97 | 90.81 | 74.30 | 66.97 | 82.71 | |||||||||||||
1956 | 69.26 | h | 64.55 | 76.81 | 80.67 | 90.32 | 100.40 | 102.90 | 102.94 | 102.67 | 84.58 | 74.30 | 68.23 | 86.21 | a | |||||||||||
1957 | 60.35 | 72.93 | 75.19 | 80.73 | 85.16 | 102.80 | 106.68 | 101.55 | 98.10 | 80.45 | 68.53 | 67.81 | 83.36 | |||||||||||||
1958 | 66.55 | 69.22 | a | 67.23 | 81.10 | 95.19 | 99.67 | 105.06 | 103.68 | 99.17 | 90.29 | 73.57 | 72.42 | 85.26 | ||||||||||||
1959 | 68.23 | 65.25 | 78.55 | 86.83 | 88.03 | 102.90 | 107.23 | 101.61 | 96.30 | 88.65 | 74.57 | 63.71 | 85.15 | |||||||||||||
1960 | 58.32 | 66.38 | 78.29 | 84.37 | 90.87 | 105.03 | 107.03 | 104.26 | 99.67 | 85.58 | 72.27 | 65.45 | 84.79 | |||||||||||||
1961 | 67.81 | 71.04 | 74.81 | 84.33 | 89.39 | 103.03 | 105.16 | 102.65 | 94.13 | 85.77 | 69.03 | 63.32 | 84.21 | |||||||||||||
1962 | 64.35 | 69.43 | 69.94 | 90.50 | 87.77 | 99.73 | 105.23 | 106.94 | 99.00 | 87.23 | 78.73 | 67.45 | 85.52 | |||||||||||||
1963 | 60.39 | 75.64 | 73.19 | 77.13 | 91.97 | 94.40 | 105.55 | 100.90 | 97.57 | 87.61 | 72.73 | 67.16 | 83.69 | |||||||||||||
1964 | 62.65 | 66.62 | 71.23 | 78.90 | 87.45 | 97.23 | 104.94 | 102.39 | 96.70 | 92.29 | 70.48 | a | 66.39 | 83.10 | ||||||||||||
1965 | 65.71 | 69.75 | 71.13 | 78.53 | 87.58 | 93.27 | 101.80 | a | 101.65 | 91.93 | 92.29 | 73.57 | 61.77 | a | 82.41 | |||||||||||
1966 | 62.00 | 63.86 | 75.48 | 86.30 | 93.23 | 99.67 | 104.55 | 104.39 | 97.60 | 85.42 | 75.30 | 66.74 | 84.54 | |||||||||||||
1967 | 66.00 | 72.46 | 76.16 | 72.60 | 89.68 | 95.30 | 106.16 | 106.16 | 94.87 | 90.55 | 78.07 | 60.48 | 84.04 | |||||||||||||
1968 | 65.32 | 74.93 | 76.16 | 80.90 | 90.58 | 95.60 | 97.50 | a | 98.90 | 98.57 | 86.06 | 72.00 | 61.13 | 83.14 | ||||||||||||
1969 | 66.13 | 64.14 | 73.87 | 82.63 | 93.39 | 95.93 | 103.71 | 107.97 | 100.00 | 83.32 | 74.30 | 67.81 | 84.43 | |||||||||||||
1970 | 64.71 | 71.96 | 74.06 | 77.73 | 93.03 | 100.80 | 107.42 | 105.84 | 97.00 | 83.32 | 74.57 | 63.23 | 84.47 | |||||||||||||
1971 | 65.42 | 71.25 | 76.29 | 80.53 | 85.10 | 98.90 | 107.42 | 101.48 | 98.90 | 80.55 | 71.77 | 60.48 | 83.17 | |||||||||||||
1972 | 64.84 | 73.66 | 85.74 | 84.93 | 91.29 | 100.60 | 108.77 | 102.48 | 96.03 | 79.74 | 69.40 | 63.00 | 85.04 | |||||||||||||
1973 | 62.06 | 66.36 | 68.32 | 81.17 | 94.16 | 102.93 | 107.29 | 104.23 | 98.03 | 89.23 | 73.70 | 69.06 | 84.71 | |||||||||||||
1974 | 62.45 | 69.82 | 76.68 | 82.83 | 92.61 | 106.10 | 103.77 | 104.45 | 100.13 | 87.84 | 75.17 | 63.94 | 85.48 | |||||||||||||
1975 | 66.74 | 67.00 | 72.10 | 73.63 | 89.74 | 99.97 | 105.35 | 105.03 | 99.40 | 86.39 | 75.97 | a | 69.23 | 84.21 | ||||||||||||
1976 | 69.00 | 70.03 | 73.19 | 78.23 | 92.65 | 99.83 | 103.87 | 101.48 | 91.87 | 86.35 | 77.93 | 68.48 | 84.41 | |||||||||||||
1977 | 64.16 | 76.14 | 71.26 | 85.60 | 82.77 | 103.53 | 106.23 | 103.23 | 98.20 | 91.39 | 79.07 | 70.26 | 85.99 | |||||||||||||
1978 | 62.87 | a | 68.57 | 76.58 | 79.57 | 91.43 | a | 104.70 | 107.16 | 104.23 | 96.33 | 92.67 | a | 72.17 | a | 62.00 | 84.86 | |||||||||
1979 | 57.81 | 67.18 | 71.58 | 82.83 | 89.06 | 101.20 | 104.71 | 99.55 | 102.00 | 88.39 | 71.67 | 68.77 | 83.73 | |||||||||||||
1980 | 65.58 | 70.48 | 71.35 | 81.77 | 84.13 | 99.80 | 107.13 | 103.87 | 98.97 | 89.87 | 77.27 | 73.06 | 85.27 | |||||||||||||
1981 | 70.23 | 72.11 | 72.55 | 85.70 | 90.16 | 104.69 | a | 106.16 | 105.65 | 99.97 | 83.35 | 76.77 | 69.71 | 86.42 | ||||||||||||
1982 | 64.10 | 70.61 | 72.13 | 81.50 | 89.68 | 97.50 | 102.16 | 103.48 | 95.23 | 84.00 | 69.87 | 62.42 | 82.72 | |||||||||||||
1983 | 67.29 | 68.36 | 72.03 | 76.10 | 91.48 | 97.63 | 103.74 | 97.77 | 97.13 | 85.00 | 72.90 | 65.29 | 82.89 | |||||||||||||
1984 | 67.71 | 70.52 | 78.39 | 80.90 | 97.52 | 98.23 | 100.77 | 100.74 | 98.97 | 81.57 | a | 70.80 | 59.58 | 83.81 | ||||||||||||
1985 | 62.81 | 66.36 | 73.13 | 86.83 | 91.90 | 103.37 | 105.77 | 104.68 | 90.47 | 84.87 | 69.80 | 66.68 | 83.89 | |||||||||||||
1986 | 71.61 | 70.46 | 80.42 | 82.79 | a | 92.35 | 103.31 | a | 100.71 | c | 104.48 | 91.73 | 83.10 | 75.45 | a | 65.65 | 85.17 | |||||||||
1987 | 63.35 | 68.64 | 72.42 | 88.03 | 89.52 | 101.93 | 101.42 | 102.74 | 98.03 | 89.68 | 69.70 | 59.00 | 83.71 | |||||||||||||
1988 | 61.71 | c | 70.84 | j | 79.74 | 81.83 | 90.94 | 99.63 | 105.42 | 102.48 | 96.97 | 86.68 | c | 73.70 | 65.81 | 85.90 | a | |||||||||
1989 | 62.03 | b | 67.54 | d | 81.06 | 92.30 | 93.06 | 101.87 | 105.68 | 101.48 | 98.50 | 87.16 | 77.20 | 68.45 | 86.36 | |||||||||||
1990 | 63.90 | b | 67.75 | 79.29 | 84.31 | n | 89.61 | 101.07 | 100.84 | f | 100.90 | 97.53 | 89.33 | d | 76.72 | a | 63.20 | a | 82.93 | b | ||||||
1991 | 62.87 | 76.25 | 68.84 | 82.00 | 88.35 | 94.77 | 104.23 | 102.84 | 98.40 | 91.74 | 75.41 | a | 64.43 | a | 84.18 | |||||||||||
1992 | 64.94 | 70.21 | 71.77 | 85.90 | 92.87 | 98.52 | a | 99.90 | 103.06 | 100.28 | a | 88.00 | 72.22 | c | 58.58 | 83.85 | ||||||||||
1993 | 61.21 | b | 65.43 | 79.07 | a | 86.40 | 92.77 | 99.17 | 100.43 | a | 102.97 | 99.23 | 86.97 | 71.13 | 65.69 | b | 84.21 | |||||||||
1994 | 70.03 | b | 65.79 | 77.72 | b | 80.57 | g | 89.00 | a | 104.50 | 105.16 | 104.84 | 98.20 | 82.90 | b | 65.62 | a | 62.60 | a | 84.21 | a | |||||
1995 | 61.31 | b | 74.11 | a | 73.40 | a | 80.80 | 85.53 | a | 97.10 | 105.68 | 106.30 | a | 99.73 | 88.55 | 78.93 | a | 67.77 | a | 84.93 | ||||||
1996 | 67.83 | a | 71.90 | 77.40 | a | 85.73 | 94.00 | a | 102.07 | 106.00 | 104.69 | b | 95.13 | 84.84 | 73.57 | 65.77 | a | 85.74 | ||||||||
1997 | 64.47 | a | 69.04 | 82.35 | 81.53 | 97.58 | 97.13 | 103.53 | a | 104.29 | 97.57 | 84.03 | b | 73.90 | 61.17 | a | 84.72 | |||||||||
1998 | 64.52 | 62.86 | 73.30 | a | ----- | z | 83.58 | 94.53 | 105.84 | 105.13 | 95.43 | 83.52 | 73.73 | 66.19 | 82.60 | a | ||||||||||
1999 | 68.89 | c | 70.17 | e | 74.83 | b | 75.93 | a | 89.94 | 98.23 | 102.27 | a | 102.30 | a | 98.55 | a | 91.23 | e | 77.81 | c | 66.28 | b | 84.70 | |||
2000 | 68.03 | a | 69.81 | c | 73.79 | b | 87.17 | a | 95.97 | 101.50 | 105.03 | 102.27 | a | 97.07 | b | 81.17 | a | 67.10 | a | 68.06 | 84.75 | |||||
2001 | 60.77 | 63.74 | a | 75.94 | 80.03 | a | 97.94 | 102.00 | 102.71 | 103.83 | a | 100.14 | a | 88.97 | 75.17 | 61.35 | 84.38 | |||||||||
2002 | 63.94 | 70.21 | 72.26 | 83.83 | 89.81 | 102.17 | 105.42 | 103.42 | 98.57 | 83.45 | 75.63 | 62.81 | 84.29 | |||||||||||||
2003 | 71.84 | 65.89 | 74.19 | 77.21 | a | 90.74 | 99.60 | 106.29 | 101.65 | 100.00 | 92.97 | 67.57 | 63.58 | 84.29 | ||||||||||||
2004 | 64.00 | 63.03 | 81.65 | 81.67 | 91.32 | 99.41 | a | 103.23 | 101.74 | 95.57 | 80.65 | 66.73 | 62.84 | 82.65 | ||||||||||||
2005 | 62.93 | a | 63.21 | 73.10 | 79.53 | 91.19 | 97.00 | 106.29 | 101.10 | 95.69 | a | 84.58 | 75.23 | 65.84 | 82.98 | |||||||||||
2006 | 65.68 | 71.32 | 68.06 | 78.43 | 93.87 | a | 102.87 | 105.39 | 102.06 | 94.90 | 83.10 | 76.20 | 63.52 | 83.78 | ||||||||||||
2007 | 60.97 | 70.54 | 77.74 | 81.93 | a | 92.19 | 100.17 | a | 104.71 | 103.81 | 94.67 | 84.32 | 76.75 | b | 59.39 | 83.93 | ||||||||||
2008 | 59.94 | 66.93 | a | 78.48 | 83.00 | a | 87.10 | 102.73 | 103.74 | 103.03 | 98.75 | b | 87.43 | a | 77.40 | 62.21 | c | 84.23 | ||||||||
2009 | 67.23 | a | 65.96 | a | 75.56 | d | 79.63 | c | 95.90 | b | 94.24 | a | 106.10 | 102.97 | a | 99.86 | b | 79.81 | j | 75.04 | b | 60.94 | 83.95 | a | ||
2010 | 63.85 | e | 66.46 | 71.76 | b | 79.30 | c | 85.75 | c | 98.66 | a | 104.81 | 102.35 | 99.53 | 83.10 | 71.07 | a | 65.52 | 82.68 | |||||||
2011 | 64.27 | a | 64.48 | a | 74.42 | 82.41 | a | 85.48 | 98.07 | a | 102.52 | 105.66 | b | 98.75 | b | 86.83 | a | 69.00 | a | 60.97 | a | 82.74 | ||||
2012 | 67.74 | 68.57 | a | 72.56 | d | 82.93 | 93.20 | a | 101.00 | a | 101.77 | 100.97 | a | 97.18 | b | 87.67 | a | 76.34 | a | 63.65 | 84.46 | |||||
2013 | 60.58 | 65.82 | 78.93 | d | 84.32 | b | 91.00 | c | 102.44 | c | 103.00 | 100.59 | d | 95.03 | 82.10 | a | 72.00 | 65.32 | c | 83.43 | ||||||
2014 | 71.07 | a | 72.89 | a | 77.38 | b | 83.62 | a | 90.70 | a | 100.79 | a | 103.90 | 98.80 | a | 97.37 | 88.33 | a | 74.30 | 63.96 | c | 85.26 | ||||
2015 | 65.81 | 74.93 | a | 79.73 | a | 81.83 | 84.55 | b | 101.57 | 99.90 | a | 104.39 | 97.24 | a | 86.67 | a | 70.41 | a | 62.10 | b | 84.09 | |||||
2016 | 62.32 | 72.89 | j | 78.96 | h | 81.96 | b | 85.52 | d | 103.85 | c | 106.17 | b | 102.45 | 92.69 | d | 88.38 | e | 75.47 | 63.35 | e | 86.22 | b | |||
2017 | 62.64 | c | 68.11 | j | 79.62 | b | 84.57 | b | 91.58 | 104.00 | 105.00 | c | 101.67 | m | 85.67 | x | 89.26 | d | 77.72 | e | 67.29 | g | 86.80 | d | ||
2018 | 68.85 | e | 71.12 | t | 75.28 | m | 86.75 | n | 91.58 | g | 102.00 | k | 105.71 | j | 104.00 | l | 101.68 | h | 82.12 | n | 72.50 | j | 62.57 | h | 68.85 | k |
2019 | 64.50 | o | 57.19 | l | 74.86 | q | 83.53 | m | 85.00 | s | 103.12 | v | 106.00 | h | 104.31 | r | 94.63 | k | 83.25 | c | 73.32 | e | 59.77 | e | 72.11 | i |
2020 | 65.14 | i | 68.57 | h | 68.38 | g | 81.21 | b | 94.69 | b | 98.52 | c | 106.32 | f | 108.54 | e | 104.66 | a | 93.27 | a | 76.54 | d | 65.56 | d | 90.37 | d |
2021 | 64.56 | f | 69.52 | a | 70.52 | b | 86.00 | e | 94.04 | d | 104.60 | 105.06 | 104.27 | a | 98.96 | c | 83.89 | c | 80.00 | a | 65.19 | e | 87.46 | a | ||
2022 | 65.95 | i | 69.24 | c | 78.41 | b | 85.00 | a | 92.59 | i | 102.38 | i | 107.00 | i | 104.60 | k | 100.50 | t | 87.53 | p | 73.08 | r | 64.72 | m | 77.55 | i |
2023 | 65.00 | n | 65.83 | e | 71.40 | p | 84.81 | i | 89.93 | d | 95.09 | g | 108.86 | j | 101.00 | q | 94.43 | g | 87.28 | m | 73.85 | c | 66.71 | j | 76.53 | i |
2024 | 63.00 | h | 66.54 | c | 68.53 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.54 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 64.61 | 68.90 | 75.02 | 82.74 | 91.02 | 100.09 | 104.85 | 103.32 | 98.25 | 87.01 | 74.07 | 65.28 | 84.54 | |||||||||||||
S.D. | 3.86 | 3.59 | 3.99 | 3.78 | 3.60 | 2.96 | 2.23 | 2.17 | 2.81 | 3.62 | 3.47 | 3.44 | 1.24 | |||||||||||||
SKEW | -0.84 | 0.25 | 0.59 | 0.04 | -0.24 | -0.10 | -0.79 | 0.13 | -0.40 | 0.17 | -0.14 | 0.25 | 0.96 | |||||||||||||
MAX | 71.84 | 76.36 | 88.87 | 92.50 | 98.87 | 106.10 | 109.35 | 108.54 | 104.66 | 96.06 | 82.13 | 73.71 | 89.58 | |||||||||||||
MIN | 50.03 | 62.00 | 67.23 | 72.60 | 82.65 | 93.27 | 97.50 | 97.77 | 90.47 | 79.74 | 65.62 | 58.58 | 82.41 | |||||||||||||
YRS | 83 | 84 | 85 | 84 | 86 | 85 | 84 | 83 | 86 | 87 | 88 | 86 | 71 |